Sexual Preference: StraightMarital Status: SingleCurrent Residence: WandererPersonality: Before being resurrected, Jessica was sweet, comical, and was incredibly kindhearted, especially to Sam. She loved him more than anything and gave him everything she could. After being resurrected, she has been hit with the cold hard truth of angels and demons and became terrified, not wanting to die like that once more, so she took herself up and trained to hunt demons. She is now very untrusting, stubborn, and sarcastic, not wanting to get involved with others whom she thinks might betray her.

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Parents: UnknownSiblings: UnknownImportant Figures: Sam WinchesterHome Town/Planet: UnknownPowers/Skills: Martial arts, combat, stealth, knowledge of supernaturalWeaknesses: MortalHistory: It is unknown how Jessica Moore lived and how exactly she met Sam Winchester, but they became a couple one and a half year before the pilot episode of the series, and Jessica often helped Sam feel normal. Despite living together and loving each other deeply, Jessica never got to know about Sam's family secrets, or that Sam had been dreaming about her death prior. When Dean Winchester, Sam's older brother, visits to bring Sam along to look for their father, Jessica worries that Sam will lose his chance in university by following his brother, but Sam reassures her that he will be back before Monday.

At some point during the end of the weekend, Jessica made cookies as a welcome present for Sam, before she was killed in the same way that Mary Winchester was killed; sliced across the stomach on the ceiling. When Sam saw Jessica, she seemed to still be alive, but soon burst into flames.

Jessica's death is what makes Sam go back to the hunting life in order to find Azazel and avenge her death. She is often the topic of choice whenever Sam is feeling down or becomes attracted to another woman in the first two seasons. Weeks after her death, Sam has nightmares about her all the time, making him sleep as little as possible. In "Home", Sam reveals to Dean that he had visions of Jessica's death before it happened, blaming himself for not telling her or doing something about it. This is also the secret that he used to summon Bloody Mary in the episode "Bloody Mary". After this episode, though, Sam's nighmare seems to dim, and he is finally able to move on with his life in the episode "Heart".

In Dean's wish-world in "What Is And What Should Never Be", Jessica is still alive, and she and Sam are engaged. This is followed up with the fact that, in "Devil's Trap", Azazel mentions to Dean that Sam was shopping for engagement rings and intended to marry Jessica before Dean came to visit him.

In "Free to Be You and Me", Lucifer communicates in Sam's dreams through an illusion of Jessica, telling him how he cannot run from who he is and that it was that which got her killed. Eventually, however, Lucifer ceases this form and changes back to Nick's shape.

In "The Devil You Know", Sam claims that a demon named Brady introduced him to Jess, and Brady himself states that it was he, not Azazel, who burned her on the ceiling.

When she had died, Jessica was sent to heaven and stayed there for five years before suddenly waking up in the middle of a field, alive once more. She couldn't explain how she was brought back or why, but she did see that there was a strange hand print now scarred into her side. Because of her wild resurrection, it had caused her to become a target for demons, as well as other supernatural beings who were curious as to how she made it out and she had come across her fears once again. She had no choice but to become a hunter.